Extensible molding-flask.



T. GRASK.

EXTENSIBLE MOLDING FLASK.

APPLICATION FILED ocr. I2, I9I2.

Patented Sept. 7, 1915.

3 SHEETS-SHEET] [NI/ENTOR AI/omey T. GRASK.

EXTENSIBLE MOLDING FLASK.

APPLICATION FILED oc.12. I9I2.

Patented Sepf. 7, 1915.

' 's SHEETS-SHEET 2.

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T. vGRASK.

EXTENSIBLE MOLDING FLASK. APPLICATION FILED ocr. I2, I9I2.

PatentedSept. 7, 1915.

3 SHEETS-SHEET 3.

""IIIIIIIIIIII HUI! UH I IIIIIIIIlillliliilllll l INI/ENTOR 'ff' l'A/lneys n 5 5 m m W and groove joints.

ira y erarias rar 'Tirannnus amsn, or WICHITA, Kansas.

nx'inivsinnn nomine-FLASH.

a speci cation.

My Iinvention relates to an improvement in extensible molding flaskssuch as are used in iron, steel, brass and other foundries, and theobject is to provide means whereby the sides and ends are capable ofbeing extended. f

The invention consists of certain novel features of construction andcombinations of parts which will be hereinafterV more fully t l siderails, and they are provided with the described and pointed out in theclaims.

In the accompanying drawings,-Figure 1 .is a perspective view oftheassembled iiask showing it in its smallestr size; Fig. 2 is n.perspective view with certain portions of the iask broken away showingthe manner otextendingthe sides and ends of the fiask; Fig. 3 is adetail sectional viewthrough one of the ends; F ig. L1 is a detailsectional view through one of the sides; Fig. 5 is a detail inperspective of the inner surface of one of the sides.

A, A represent the side rails of the iask ed together at their innerends by tongue Each side 'of the side rails A is preferably providedwith a. dovetailed groove 1, 1, in which clamping bars 2, 2 arereceived. Bolts 3, 3 pass through the side rails and the clamping barsfor fastening them together, and nuts 4, 4 are secured upon the boltsfor fasteningthe bolts to the parts.

End rails C, C are made in sections and are connected together by tongueand groove joints at their inner ends. braces 5, 5 are connected bymeans of bolts 6 to the end rails C and the braces ai'e also connectedVto the side rails A by means of bolts 7 thereby fastening the end railsto the side rails. The end rails C are provided with longitudinaldovetailcd grooves 8 in which locking bars 9, 0 are received forfastening the end rails togethenand bolts it),

10 pass through the bars and end rails for fastening the bars and endrails together.

The inner sides the 'side' rails are provided with vertical grooves 12for-the reception oi' the sand supporting bars 13, 13.

Specification of Letters Patent.

Angle ters Patent isframmen sept. iaia l Application filed October l2,1912;- Serial No. 725,425.

for joining and connecting 'them together and preventing the side railsfrom spreading apart especially at the center. Connected to the endrails C are the dowel pins 15 which are adapted to fit into the socketscai'- ried by the drag (not shown). Supplemental or extension end rails16 and side4 rails 17 are interposed between the end 'rails C and theside rails A as is shown clearly' 1n Fig. 2 when it is desired to eitherwiden or lengthen the copeoriiask fra-me.

The supplemental extension endrails and side rails 16 and 17 areprovidedA with tongues and grooves so that the tongue and groove jointscan be carried out with these Rods 11i extend through the two side railsAl members `in connection with the .end and.

longitudinal grooves for the reception' of the clampingbars, whichclamping bars are j connected to the supplemental rails by rmeans 'ofthe bolts 10-and 3 respectively.,h

The ends of the side clamping'bars 2 and the ends of the side. rails Aare extended forforming handles 18, 18 whereby the iiask can be carried.1

it will be seen from the foregoingthat.

it can be made longer. in this manner it is Y not necessary to provide aplurality of va.. 'rious sizes 'of forms as is now Arequired vn Imostfoundries where only a small/portion of the various sizes of flasksaarein use atf any one time andconsider-'able space is' required for storage-of the'unused flasks, and naturally the expense of repairs on a greatnumber of flasks is very large. Y In the wideningof the flask it isnecessaryto provide larger bars 13. j v t is evident that. slight'changes might be made in the formi and arrangement of the several partsdescribed without departing from the .spirit and scope of my invention,

and'hence I do not wish to be limited to the exact construction hereinset forth.

vliiiving thus 'described my invention, what l claim as new and desireto secure 1. .in a molding/flask, the combination with sectionalsiderails provided with longitudinal grooves in the side walls thereof,of end rails connected to the side rails and by Let* clamping barsslidably .mounted -in the grooves of the side rails for fastening thesections of each of the side rails together.

2. In a molding flask, the combination with sectional side and end railsprovided .with longitudinal grooves A1n the sides thereof, of clampingbars slidably mounted in the grooves of the side and end rails forconnecting the sections of each of the side andend rails together.

3. In a molding flask, the combination with eXtensible-sectional sidevand end rails provided with longitudinal grooves in the sides thereof,of clamping bars slidably mounted in the grooves of the side and endrails for connecting the sections of each of the side and end railstogether.

4. In a molding flask, the combination Awith extensible side railshaving longitudi- `ing the clamping bars to the side rails for holdingthe various sections of the side and end rails together.

6. In a molding flask, the combination with extensible side rails,having longitudinal grooves in the sides thereof, clamping bars slidablymounted in the longitudinal grooves of the side rails for fastening thesections of the side rails together, said side rails provided withvertical grooves on one side above and below the longitudinal grooves,and sand-supporting bars located between the side rails and the ends ofthe vbars received in the vertical grooves of the with sectional sideand end rails havingdove-tailed grooves on their opposite faces, ofclamping-bars slidably fitted in said grooves, and bolts passing throughsaid side and end rails and clamping-bars.

9, In a molding-flask, the combination with sectional side and end railsand sandsup'porting bars, the side and end rails having longitudinalgrooves in their opposite faces, of clamping-bars fitted in saidgrooves, the inner clamping-bars of the sides locking the supportingbars against removal.

10. Inv a molding-dask, the combination with sectional side and endrails, the adjacent ends of the sections of which have a tongue. andgroove joint and the sides of which have longitudinal grooves, ofsupplemental or extension end and side rails correspondingly constructedwith a tongue at one end and a groove at the other, and side grooves,clamping-bars constructed and adapted to fit said side grooves, andmeans for fastening the said parts together.

In testimony whereof I affix my signature, .1n thepresence of twowitnesses.

'rHADDnUs GnAsK.,

